Allow comments in extension config files.

chrome/common/extensions/api/ttsEngine.json

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
 [
   {
     "namespace": "ttsEngine",
     "dependencies": [ "tts" ],
     "functions": [
       {
         "name": "sendTtsEvent",
         "nodoc": true,
         "type": "function",
         "description": "Routes a TTS event from a speech engine to a client.",
@@ skipping 80 matching lines @@
         ]
       },
       {
         "name": "onStop",
         "type": "function",
         "description": "Fired when a call is made to tts.stop and this extension may be in the middle of speaking. If an extension receives a call to onStop and speech is already stopped, it should do nothing (not raise an error)."
       }
     ]
   }
 ]